Looking for some info. Any help will be greatly appreciated. Looking at a Monarch 14C. Someone has changed the motor. It has an 8 hp single phase on it which is bad. What I would like to know is what RPM and what frame size motor would have been on this lathe. I'm pretty sure it would have been A 7.5 hp. Wanting to price the right replacement motor before I make a deal on this lathe. Thanks in advance.
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Monarch 14C motor
- Thread starter osborne77
- Start date
- Replies 4
- Views 1,800
johnoder
Diamond
- Joined
- Jul 16, 2004
- Location
- Houston, TX USA
It would be an obsolete frame size. In my 1980 MHB, a 7 1/2 1200 RPM would have been a 254T frame and the 1800 would have been 213T
Neither of these may be what the mounting plate is drilled for since a 14C could easily be 80 years old - with larger frame size motor
Neither of these may be what the mounting plate is drilled for since a 14C could easily be 80 years old - with larger frame size motor
johnoder
Diamond
- Joined
- Jul 16, 2004
- Location
- Houston, TX USA
Sounds right. If motor pulley is original you can take clutch pulley OD and motor pulley OD and see what about the ratio would be and see what motor RPM gets close to the posted input pulley RPM
Say, for instance, the input pulley speed is said to be 500 and the motor pulley was 4" OD and the clutch or input pulley was 10" - you would calculate a motor speed of 1250
Input pulley speed is often part of info on spindle speed chart
Ok thanks. I'm gonna look around and see what motors are available. This thing hasn't ran in 27 years. Got a lot of dust and dirt on it. Looks to be in really nice shape tho. Under the 27 years of crud. Any ideal what it's worth?? It's 102 centers. It is missing the motor and clutch cover tho.
